package com.j2ee.ex.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ServletDemo extends HttpServlet {

	private static final long serialVersionUID = -4325366408224538056L;

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		String pName = request.getParameter("uName");
		
		String remoteAddr = request.getRemoteAddr();
		String remoteHost = request.getRemoteHost();
		int remotePort = request.getRemotePort();
		String sessionId = request.getSession().getId();
		
		PrintWriter out = response.getWriter();
		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>Welcome " + pName + "</TITLE></HEAD>");
		out.println("  <BODY>");
		out.println("Hello," + pName + "!This is my first J2EE Demo.");
		out.println("<br>");
		out.println("<table>");
		out.println("<tr>");
		out.println("<td>Remote Address:</td>");
		out.println("<td>" + remoteAddr + "</td>");
		out.println("</tr>");
		out.println("<table>");
		out.println("<tr>");
		out.println("<td>Remote Host:</td>");
		out.println("<td>" + remoteHost + "</td>");
		out.println("</tr>");
		out.println("<tr>");
		out.println("<td>Remote Port:</td>");
		out.println("<td>" + remotePort + "</td>");
		out.println("</tr>");
		out.println("<tr>");
		out.println("<td>Session Id:</td>");
		out.println("<td>" + sessionId + "</td>");
		out.println("</tr>");
		out.println("</table>");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}
